Maybe a direct solution is to use a domain ddns for example here: You create the domain here https://my.noip.com and then install the client https://www.noip.com/download?page=winJAKKEE HOW TO CONFIGM MY SERVER ON Port Farwording
Yes, that is ... should work perfectly if you have the dmz to your local ip net.connect xxxxxxx.ddns.net: port.this i open View attachment 1982